It was Crick and Watson who worked out the structure of DNA in the 1950s, but its discovery was made nearly 100 years previously by a Swiss physician called Frederick Miescher.
The residents will range in nationality, cultural, religion, age, sex, political association, socio-economic backgrounds, etc. The Assisted Living Federation of America reports that the average age of an assisted living resident is 86.9 years (female average age 87.3; male average age 85.7). Female residents (73.6%) outnumber male residents by almost 3 to 1.
By 2030, there will be about 72.1 million older persons, more than twice their number in 2000. People 65-plus years old represented 12.4% of the population in the year 2000, but that is expected to grow to be 19% of the population by 2030. This will mean more demand for elderly care facilities in the coming years. There were more than 36,000 assisted living facilities in the United States in 2009, according to the Assisted Living Federation of America in 2009. More than 1 million senior citizens are served by these assisted living facilities.